docs: def calc_avgstrlen_pathstextnodes(pars_tnodes, dbg=False):
      """In the effort of not using external libraries (like scipy, numpy, etc),
      I've written some harmless code for basic statistical calculations
      """
      ttl = 0
      for _, tnodes in pars_tnodes:
          ttl += tnodes[3]        # index #3 holds the avg strlen
  
      crd = len(pars_tnodes)
      avg = ttl/crd
      if dbg is True:
          print(avg)
      #       avg = ttl/crd
      return (avg, ttl, crd)